Big Temperature Swing Expected


There’s a quick cool down in the works for KELOLAND. In fact, some of us have already felt it with much cooler air in western South Dakota. Temperature swings are common in September, but getting a swing of 20 degrees or more, may not be as common as you think.

Since we’ve been so warm lately, I just looked at recent cold swings of 20 degrees or more that occurred over one day.  Here’s what I found.

Since 1990, Sioux Falls has experienced 11 instances when the high temperature dropped 20 degrees or more in a day’s time. The most dramatic drop was September 11 to 12th of 2012 when the high went from 96 on the 11th to 67 on the 12th, a 29 degree swing.

It’s also interesting to note that these big temperature swings average out to be around the 18th of the month, so we’re just about on time with our temperature difference.

While we’ll warm next week, we’ll cool again next weekend.  If it’s a swing of 20 degrees or more is yet to be determined.  

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